Ian R. Graham *73

Ian died Dec. 13, 2025, of Parkinson’s disease in Toronto, at the age of 77.

He was born May 3, 1948, in Oxford, England. Ian received his undergraduate education at the University of Toronto, graduating in 1970, and earned his doctorate in mathematics at Princeton in 1973. The topic of his dissertation was “Boundary behavior of the Carathéodory and Kobayashi metrics on strongly pseudoconvex domains in [phi]n with smooth boundary.” His adviser was Norberto Kerzman.

Ian completed a postdoctoral fellowship at MIT before returning to the University of Toronto, where he was a professor of mathematics until his retirement. His research was primarily in geometric function theory of several complex variables. He took research leaves at the University of California, Berkeley, and Stanford. His publications include the textbook Geometric Function Theory in One and Higher Dimensions.

Ian was predeceased by his wife, Chibeck Mok, in 1998. He is survived by his siblings Gordon Graham, Miriam Monk, and Ross Graham *82; and his nieces and nephews.

Graduate memorials are prepared by the APGA.